Kohler CV11-16, Руководство по обслуживанию

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10.11
Section 10
Inspection and Reconditioning
10
1. Oil Control Ring (Bottom Groove): Install the
expander and then the rails. Make sure the ends
of the expander are not overlapped.
2. Compression Ring (Center Groove): Install the
center ring using a piston ring installation tool.
Make sure the ‘‘pip’’ mark is up and the PINK
dykem stripe (if present) is to the left of the end
gap.
3. Compression Ring (Top Groove): Install the top
ring using a piston ring installation tool. Make
sure the ‘‘pip’’ mark is up and the BLUE dykem
stripe (if present) is to the left of the end gap.
Connecting Rods
Offset stepped-cap connecting rods are used in all
these engines.
Inspection and Service
Check bearing area (big end) for excessive wear,
score marks, running and side clearances (refer to
Section 1, ‘‘Specifi cations, Tolerances, and Special
Torque Values’’). Replace rod if scored or excessively
worn.
Service replacement connecting rods are available in
STD crankpin size and
0.25 mm (0.010 in.) undersize.
Always refer to the appropriate parts information to
ensure that correct replacements are used.
Oil Pump
Inspection and Service
Pump can be checked/replaced without removing oil
pan.
Oil Pressure Relief Valve
If an early style (fi ve-piece) oil pressure relief valve
body, piston, and spring is used (see Figure 10-11).
Check that piston and body are free of nicks or burrs.
Check the spring for any wear or distortion. The free
length of the spring should be approximately
0.992
in . Replace the spring if worn, out of specifi cation, or
damaged/distorted.
If the later style (one-piece) oil pressure relief valve
(see Figure 10-12) is used (staked to the closure
plate), it should only be removed if it is going to be
replaced. Check to see that internal spring-loaded
piston is free.
Figure 10-11. Five-Piece Oil Pressure Relief Valve.
Oil Pressure
Relief Bracket
Hex. Flange
Screw
Relief Valve
Body
Figure 10-12. One-Piece Oil Pressure Relief Valve.
Governor Gear and Shaft
Inspection
Inspect the governor gear teeth. Look for any evidence
of worn, chipped, or cracked teeth. If one or more of
these problems is noted, replace the governor gear.
The gear is held on the governor shaft by molded tabs
which are damaged when the gear is removed. Never
reuse the gear once it has been pulled from the shaft.
Replace the governor shaft only if it is damaged or
worn.
Procedure to Remove Governor Shaft:
1. Remove governor gear assembly and regulating
pin.
2. Locate governor pin from fl ywheel side of
crankcase. With a small punch, drive the pin
toward the inside of the crankcase. This could
also be done with a press. DO NOT remove the
governor pin with a vise grip or pliers, you may
damage the crankcase.